public class Main {
    public static void main(String[] args) {
        Baby b1 = new Baby("肖天行", 34, 5, '男');
        Baby b2 = new Baby("杨航", 36 , 4.5, '男');
        System.out.println(b1.firstName + " " + b1.height + " " + b1.weight + " " + b2.firstName + " " + b2.height + " " + b2.weight);
    }
}